Leaf-like ZnO nanosheets synthesized via a microwave-assisted method and their VOC’s gas sensing application

In this paper, leaf-like Zinc oxide (ZnO) nanosheets were successfully synthesized by microwave-assisted method through an easy, low cost solvothermal process and then complied with annealing at 500°C [1]. Characterization of the pre-synthesized material revealed mesoporous single crystals leaf–like ZnO nanosheets with hexagonal wurtzite as shown in figures 1. Gas sensors depend on these mesoporous, single-crystal structures causes gas molecules to diffuse fast and provide high surface area, improving the gas sensitivity [2]. Consequently, the gas-sensing function of the leaf-like ZnO nanosheets has tested for different types of volatile organic compounds (VOC’s). Sensitivity, stability, response and recovery time of leaf-like ZnO nanosheets’ sensor to ethanol vapor was improved highly at 255°C. According to figure 2, leaf-like ZnO nanosheets’ sensor had the highest selectivity and sensitivity to ethanol vapor